Cap'n Turbot and Coral find an old submarine purched near a canyon that has a coral reef in it. Coral finds Moby and McSquidly in it looking for parts for one of his inventions. When Coral gets trapped with Moby and McSquidly with the submarine threatening to fall onto the coral reef, it's up to the Aqua Pups to rescue them and get the submarine away from the coral reef.
Die Aqua-Hunde retten Coral, Moby und Mr Tinti aus einem U-Boot, bevor es in ein Riff stürzt.
L'Aqua Patrouille empêche un sous-marin de s'écraser sur un délicat récif.
Un vecchio sottomarino minaccia la barriera corallina. Gli Acqua Cuccioli dovranno salvare la flora e la fauna del reef.
Los cachorros deben impedir que un barco se estrelle contra un delicado arrecife.
Akvapennut pelastavat syvänteen. Ryhmä Hau pelastaa Korallin, Mobyn ja Jalmarin romahdusvaarassa olevasta sukellusveneen hylystä.
